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Tightening Procedure For Cylinder Head Bolts - AR01.30-P-5800-01MR

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Engine 274 

MODIFICATION NOTES

12.10.15 Operation step 5 added 15th stage was added in the basic data. BA01.30-P-1001-01Y
CYLINDER HEAD

Number Designation Engine 274
BA01.30-P-1001-01Y Bolt, cylinder head to crankcase M11 Stage 1 Nm 10
Stage 2 Nm 40
Stage 3 ∠° 90
Stage 4 ∠° 90
Stage 5 ∠° 90
CYLINDER HEAD

Number Designation Engine 274
BA01.30-P-1002-01Y Bolt, cylinder head to timing case cover M8 Nm 20
G12816401Courtesy of MERCEDES-BENZ USA
  1. Tighten cylinder head bolts (1 to 10) to stage 1.
  2. Tighten cylinder head bolts (1 to 10) to stage 2.
  3. Tighten cylinder head bolts (1 to 10) to stage 3.
  4. Tighten cylinder head bolts (1 to 10) to stage 4.
  5. Tighten cylinder head bolts (1 to 10) to stage 5.
  6. Tighten cylinder head bolts (11).

    NOTES Always adhere to the specified tightening sequence.

    Consequential damage can occur to the Engine otherwise.

    IMPORTANT Use the reverse tightening order to loosen the cylinder head bolts (1 to 11).